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Restoring Old Blades

I bought an old cleaver on ebay a while back just because I thought it looked kind of cool.
It had some light rust and minor pitting. My plan was to clean it up and rehandle it.
I did not want to polish it smooth because I kind of like it looking old.

Can anyone suggest a way to clean up the surface without removing the surface texture?
Any suggestions are welcomed.

Another trick that's food safe and may work is ketchup. Wipe on a bunch, let it sit a few minutes than rub off, rinse off....
The vinegar in ketchup does a good job at helping eat through or loosen rust and dirt. The thickness helps it stay in place....and it works well as a really fine gentle abrasive. I've used it to take really nasty old copper back to a mirror shine (ketchup as cleaner, than buffing) and for rust on metals a bunch of times. I haven't tried it on a knife restoration but no reason it shouldn't help there too.

One caution though -with ketchup don't leave it on their too long. It's less acidic and lower in vinegar content than mustard, but in the same way mustard's used to force a patina and surface etch, the ketchup could probably do the same if left on too long. Less than ten minutes though, suspect no problem at all.....

I did a little experiment with simichrome metal polish last night. Works good. I think it is similar to the stuff Dave recommended above. I was also thinking that WD40 would have similar properties to CLP products so I gave that a try too. Works well.